. >> reporter: former president bill clinton headlined a rally in west virginia for governor joe manchin running for the u.s. senate. >> you have to fly away from your common sense with the country in the economic trouble we have with the budget challenges we have to deny not just west virginiaians but america the chance to have one of the finest governors that i've ever seen who turned this state around in 15 different ways to go to washington and try to help bring people together to actually solve our problems instead of to keep fighting. >> reporter: for his part president obama told a radio interviewer that the country's future depends in key ways on people turning out to vote tomorrow. >> you prove.... >> reporter: and the democratic national committee issued a final ad urging democratic voters to get to the polls. >> we cannot sit this one out. >> reporter: but the last of the pre-election polls showed a potentially devastating picture for democrats on tuesday. a wall street journal snrb/nbc survey found republicans holding the advantage among likely voters. the margin in the u.s.